diff options
Diffstat (limited to 'sys/contrib/dev/acpica/nsxfobj.c')
| -rw-r--r-- | sys/contrib/dev/acpica/nsxfobj.c | 820 |
1 files changed, 41 insertions, 779 deletions
diff --git a/sys/contrib/dev/acpica/nsxfobj.c b/sys/contrib/dev/acpica/nsxfobj.c index bd3e26d..baa72a9 100644 --- a/sys/contrib/dev/acpica/nsxfobj.c +++ b/sys/contrib/dev/acpica/nsxfobj.c @@ -2,7 +2,7 @@ * * Module Name: nsxfobj - Public interfaces to the ACPI subsystem * ACPI Object oriented interfaces - * $Revision: 112 $ + * $Revision: 113 $ * ******************************************************************************/ @@ -125,420 +125,6 @@ #define _COMPONENT ACPI_NAMESPACE ACPI_MODULE_NAME ("nsxfobj") - -/******************************************************************************* - * - * FUNCTION: AcpiEvaluateObjectTyped - * - * PARAMETERS: Handle - Object handle (optional) - * *Pathname - Object pathname (optional) - * **ExternalParams - List of parameters to pass to method, - * terminated by NULL. May be NULL - * if no parameters are being passed. - * *ReturnBuffer - Where to put method's return value (if - * any). If NULL, no value is returned. - * ReturnType - Expected type of return object - * - * RETURN: Status - * - * DESCRIPTION: Find and evaluate the given object, passing the given - * parameters if necessary. One of "Handle" or "Pathname" must - * be valid (non-null) - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvaluateObjectTyped ( - ACPI_HANDLE Handle, - ACPI_STRING Pathname, - ACPI_OBJECT_LIST *ExternalParams, - ACPI_BUFFER *ReturnBuffer, - ACPI_OBJECT_TYPE ReturnType) -{ - ACPI_STATUS Status; - BOOLEAN MustFree = FALSE; - - - ACPI_FUNCTION_TRACE ("AcpiEvaluateObjectTyped"); - - - /* Return buffer must be valid */ - - if (!ReturnBuffer) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - if (ReturnBuffer->Length == ACPI_ALLOCATE_BUFFER) - { - MustFree = TRUE; - } - - /* Evaluate the object */ - - Status = AcpiEvaluateObject (Handle, Pathname, ExternalParams, ReturnBuffer); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Type ANY means "don't care" */ - - if (ReturnType == ACPI_TYPE_ANY) - { - return_ACPI_STATUS (AE_OK); - } - - if (ReturnBuffer->Length == 0) - { - /* Error because caller specifically asked for a return value */ - - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "No return value\n")); - - return_ACPI_STATUS (AE_NULL_OBJECT); - } - - /* Examine the object type returned from EvaluateObject */ - - if (((ACPI_OBJECT *) ReturnBuffer->Pointer)->Type == ReturnType) - { - return_ACPI_STATUS (AE_OK); - } - - /* Return object type does not match requested type */ - - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Incorrect return type [%s] requested [%s]\n", - AcpiUtGetTypeName (((ACPI_OBJECT *) ReturnBuffer->Pointer)->Type), - AcpiUtGetTypeName (ReturnType))); - - if (MustFree) - { - /* Caller used ACPI_ALLOCATE_BUFFER, free the return buffer */ - - AcpiOsFree (ReturnBuffer->Pointer); - ReturnBuffer->Pointer = NULL; - } - - ReturnBuffer->Length = 0; - return_ACPI_STATUS (AE_TYPE); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiEvaluateObject - * - * PARAMETERS: Handle - Object handle (optional) - * *Pathname - Object pathname (optional) - * **ExternalParams - List of parameters to pass to method, - * terminated by NULL. May be NULL - * if no parameters are being passed. - * *ReturnBuffer - Where to put method's return value (if - * any). If NULL, no value is returned. - * - * RETURN: Status - * - * DESCRIPTION: Find and evaluate the given object, passing the given - * parameters if necessary. One of "Handle" or "Pathname" must - * be valid (non-null) - * - ******************************************************************************/ - -ACPI_STATUS -AcpiEvaluateObject ( - ACPI_HANDLE Handle, - ACPI_STRING Pathname, - ACPI_OBJECT_LIST *ExternalParams, - ACPI_BUFFER *ReturnBuffer) -{ - ACPI_STATUS Status; - ACPI_OPERAND_OBJECT **InternalParams = NULL; - ACPI_OPERAND_OBJECT *InternalReturnObj = NULL; - ACPI_SIZE BufferSpaceNeeded; - UINT32 i; - - - ACPI_FUNCTION_TRACE ("AcpiEvaluateObject"); - - - /* - * If there are parameters to be passed to the object - * (which must be a control method), the external objects - * must be converted to internal objects - */ - if (ExternalParams && ExternalParams->Count) - { - /* - * Allocate a new parameter block for the internal objects - * Add 1 to count to allow for null terminated internal list - */ - InternalParams = ACPI_MEM_CALLOCATE (((ACPI_SIZE) ExternalParams->Count + 1) * - sizeof (void *)); - if (!InternalParams) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - /* - * Convert each external object in the list to an - * internal object - */ - for (i = 0; i < ExternalParams->Count; i++) - { - Status = AcpiUtCopyEobjectToIobject (&ExternalParams->Pointer[i], - &InternalParams[i]); - if (ACPI_FAILURE (Status)) - { - AcpiUtDeleteInternalObjectList (InternalParams); - return_ACPI_STATUS (Status); - } - } - InternalParams[ExternalParams->Count] = NULL; - } - - /* - * Three major cases: - * 1) Fully qualified pathname - * 2) No handle, not fully qualified pathname (error) - * 3) Valid handle - */ - if ((Pathname) && - (AcpiNsValidRootPrefix (Pathname[0]))) - { - /* - * The path is fully qualified, just evaluate by name - */ - Status = AcpiNsEvaluateByName (Pathname, InternalParams, - &InternalReturnObj); - } - else if (!Handle) - { - /* - * A handle is optional iff a fully qualified pathname - * is specified. Since we've already handled fully - * qualified names above, this is an error - */ - if (!Pathname) - { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Both Handle and Pathname are NULL\n")); - } - else - { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Handle is NULL and Pathname is relative\n")); - } - - Status = AE_BAD_PARAMETER; - } - else - { - /* - * We get here if we have a handle -- and if we have a - * pathname it is relative. The handle will be validated - * in the lower procedures - */ - if (!Pathname) - { - /* - * The null pathname case means the handle is for - * the actual object to be evaluated - */ - Status = AcpiNsEvaluateByHandle (Handle, InternalParams, - &InternalReturnObj); - } - else - { - /* - * Both a Handle and a relative Pathname - */ - Status = AcpiNsEvaluateRelative (Handle, Pathname, InternalParams, - &InternalReturnObj); - } - } - - - /* - * If we are expecting a return value, and all went well above, - * copy the return value to an external object. - */ - if (ReturnBuffer) - { - if (!InternalReturnObj) - { - ReturnBuffer->Length = 0; - } - else - { - if (ACPI_GET_DESCRIPTOR_TYPE (InternalReturnObj) == ACPI_DESC_TYPE_NAMED) - { - /* - * If we received a NS Node as a return object, this means that - * the object we are evaluating has nothing interesting to - * return (such as a mutex, etc.) We return an error because - * these types are essentially unsupported by this interface. - * We don't check up front because this makes it easier to add - * support for various types at a later date if necessary. - */ - Status = AE_TYPE; - InternalReturnObj = NULL; /* No need to delete a NS Node */ - ReturnBuffer->Length = 0; - } - - if (ACPI_SUCCESS (Status)) - { - /* - * Find out how large a buffer is needed - * to contain the returned object - */ - Status = AcpiUtGetObjectSize (InternalReturnObj, - &BufferSpaceNeeded); - if (ACPI_SUCCESS (Status)) - { - /* Validate/Allocate/Clear caller buffer */ - - Status = AcpiUtInitializeBuffer (ReturnBuffer, BufferSpaceNeeded); - if (ACPI_FAILURE (Status)) - { - /* - * Caller's buffer is too small or a new one can't be allocated - */ - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Needed buffer size %X, %s\n", - (UINT32) BufferSpaceNeeded, AcpiFormatException (Status))); - } - else - { - /* - * We have enough space for the object, build it - */ - Status = AcpiUtCopyIobjectToEobject (InternalReturnObj, - ReturnBuffer); - } - } - } - } - } - - /* Delete the return and parameter objects */ - - if (InternalReturnObj) - { - /* - * Delete the internal return object. (Or at least - * decrement the reference count by one) - */ - AcpiUtRemoveReference (InternalReturnObj); - } - - /* - * Free the input parameter list (if we created one), - */ - if (InternalParams) - { - /* Free the allocated parameter block */ - - AcpiUtDeleteInternalObjectList (InternalParams); - } - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiGetNextObject - * - * PARAMETERS: Type - Type of object to be searched for - * Parent - Parent object whose children we are getting - * LastChild - Previous child that was found. - * The NEXT child will be returned - * RetHandle - Where handle to the next object is placed - * - * RETURN: Status - * - * DESCRIPTION: Return the next peer object within the namespace. If Handle is - * valid, Scope is ignored. Otherwise, the first object within - * Scope is returned. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiGetNextObject ( - ACPI_OBJECT_TYPE Type, - ACPI_HANDLE Parent, - ACPI_HANDLE Child, - ACPI_HANDLE *RetHandle) -{ - ACPI_STATUS Status; - ACPI_NAMESPACE_NODE *Node; - ACPI_NAMESPACE_NODE *ParentNode = NULL; - ACPI_NAMESPACE_NODE *ChildNode = NULL; - - - /* Parameter validation */ - - if (Type > ACPI_TYPE_MAX) - { - return (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - /* If null handle, use the parent */ - - if (!Child) - { - /* Start search at the beginning of the specified scope */ - - ParentNode = AcpiNsMapHandleToNode (Parent); - if (!ParentNode) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - } - else - { - /* Non-null handle, ignore the parent */ - /* Convert and validate the handle */ - - ChildNode = AcpiNsMapHandleToNode (Child); - if (!ChildNode) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - } - - /* Internal function does the real work */ - - Node = AcpiNsGetNextNode (Type, ParentNode, ChildNode); - if (!Node) - { - Status = AE_NOT_FOUND; - goto UnlockAndExit; - } - - if (RetHandle) - { - *RetHandle = AcpiNsConvertEntryToHandle (Node); - } - - -UnlockAndExit: - - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return (Status); -} - - /******************************************************************************* * * FUNCTION: AcpiGetType @@ -673,415 +259,91 @@ UnlockAndExit: /******************************************************************************* * - * FUNCTION: AcpiWalkNamespace - * - * PARAMETERS: Type - ACPI_OBJECT_TYPE to search for - * StartObject - Handle in namespace where search begins - * MaxDepth - Depth to which search is to reach - * UserFunction - Called when an object of "Type" is found - * Context - Passed to user function - * ReturnValue - Location where return value of - * UserFunction is put if terminated early + * FUNCTION: AcpiGetNextObject * - * RETURNS Return value from the UserFunction if terminated early. - * Otherwise, returns NULL. + * PARAMETERS: Type - Type of object to be searched for + * Parent - Parent object whose children we are getting + * LastChild - Previous child that was found. + * The NEXT child will be returned + * RetHandle - Where handle to the next object is placed * - * DESCRIPTION: Performs a modified depth-first walk of the namespace tree, - * starting (and ending) at the object specified by StartHandle. - * The UserFunction is called whenever an object that matches - * the type parameter is found. If the user function returns - * a non-zero value, the search is terminated immediately and this - * value is returned to the caller. + * RETURN: Status * - * The point of this procedure is to provide a generic namespace - * walk routine that can be called from multiple places to - * provide multiple services; the User Function can be tailored - * to each task, whether it is a print function, a compare - * function, etc. + * DESCRIPTION: Return the next peer object within the namespace. If Handle is + * valid, Scope is ignored. Otherwise, the first object within + * Scope is returned. * ******************************************************************************/ ACPI_STATUS -AcpiWalkNamespace ( +AcpiGetNextObject ( ACPI_OBJECT_TYPE Type, - ACPI_HANDLE StartObject, - UINT32 MaxDepth, - ACPI_WALK_CALLBACK UserFunction, - void *Context, - void **ReturnValue) + ACPI_HANDLE Parent, + ACPI_HANDLE Child, + ACPI_HANDLE *RetHandle) { ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE ("AcpiWalkNamespace"); + ACPI_NAMESPACE_NODE *Node; + ACPI_NAMESPACE_NODE *ParentNode = NULL; + ACPI_NAMESPACE_NODE *ChildNode = NULL; /* Parameter validation */ - if ((Type > ACPI_TYPE_MAX) || - (!MaxDepth) || - (!UserFunction)) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - /* - * Lock the namespace around the walk. - * The namespace will be unlocked/locked around each call - * to the user function - since this function - * must be allowed to make Acpi calls itself. - */ - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) + if (Type > ACPI_TYPE_MAX) { - return_ACPI_STATUS (Status); + return (AE_BAD_PARAMETER); } - Status = AcpiNsWalkNamespace (Type, StartObject, MaxDepth, ACPI_NS_WALK_UNLOCK, - UserFunction, Context, ReturnValue); - - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiNsGetDeviceCallback - * - * PARAMETERS: Callback from AcpiGetDevice - * - * RETURN: Status - * - * DESCRIPTION: Takes callbacks from WalkNamespace and filters out all non- - * present devices, or if they specified a HID, it filters based - * on that. - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiNsGetDeviceCallback ( - ACPI_HANDLE ObjHandle, - UINT32 NestingLevel, - void *Context, - void **ReturnValue) -{ - ACPI_STATUS Status; - ACPI_NAMESPACE_NODE *Node; - UINT32 Flags; - ACPI_DEVICE_ID Hid; - ACPI_DEVICE_ID Cid; - ACPI_GET_DEVICES_INFO *Info; - - - Info = Context; - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return (Status); } - Node = AcpiNsMapHandleToNode (ObjHandle); - Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - if (!Node) - { - return (AE_BAD_PARAMETER); - } - - /* - * Run _STA to determine if device is present - */ - Status = AcpiUtExecute_STA (Node, &Flags); - if (ACPI_FAILURE (Status)) - { - return (AE_CTRL_DEPTH); - } - - if (!(Flags & 0x01)) - { - /* Don't return at the device or children of the device if not there */ - return (AE_CTRL_DEPTH); - } + /* If null handle, use the parent */ - /* - * Filter based on device HID & CID - */ - if (Info->Hid != NULL) + if (!Child) { - Status = AcpiUtExecute_HID (Node, &Hid); - if (Status == AE_NOT_FOUND) - { - return (AE_OK); - } - else if (ACPI_FAILURE (Status)) - { - return (AE_CTRL_DEPTH); - } + /* Start search at the beginning of the specified scope */ - if (ACPI_STRNCMP (Hid.Buffer, Info->Hid, sizeof (Hid.Buffer)) != 0) + ParentNode = AcpiNsMapHandleToNode (Parent); + if (!ParentNode) { - Status = AcpiUtExecute_CID (Node, &Cid); - if (Status == AE_NOT_FOUND) - { - return (AE_OK); - } - else if (ACPI_FAILURE (Status)) - { - return (AE_CTRL_DEPTH); - } - - /* TBD: Handle CID packages */ - - if (ACPI_STRNCMP (Cid.Buffer, Info->Hid, sizeof (Cid.Buffer)) != 0) - { - return (AE_OK); - } + Status = AE_BAD_PARAMETER; + goto UnlockAndExit; } } - - Status = Info->UserFunction (ObjHandle, NestingLevel, Info->Context, ReturnValue); - return (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiGetDevices - * - * PARAMETERS: HID - HID to search for. Can be NULL. - * UserFunction - Called when a matching object is found - * Context - Passed to user function - * ReturnValue - Location where return value of - * UserFunction is put if terminated early - * - * RETURNS Return value from the UserFunction if terminated early. - * Otherwise, returns NULL. - * - * DESCRIPTION: Performs a modified depth-first walk of the namespace tree, - * starting (and ending) at the object specified by StartHandle. - * The UserFunction is called whenever an object that matches - * the type parameter is found. If the user function returns - * a non-zero value, the search is terminated immediately and this - * value is returned to the caller. - * - * This is a wrapper for WalkNamespace, but the callback performs - * additional filtering. Please see AcpiGetDeviceCallback. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiGetDevices ( - NATIVE_CHAR *HID, - ACPI_WALK_CALLBACK UserFunction, - void *Context, - void **ReturnValue) -{ - ACPI_STATUS Status; - ACPI_GET_DEVICES_INFO Info; - - - ACPI_FUNCTION_TRACE ("AcpiGetDevices"); - - - /* Parameter validation */ - - if (!UserFunction) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - /* - * We're going to call their callback from OUR callback, so we need - * to know what it is, and their context parameter. - */ - Info.Context = Context; - Info.UserFunction = UserFunction; - Info.Hid = HID; - - /* - * Lock the namespace around the walk. - * The namespace will be unlocked/locked around each call - * to the user function - since this function - * must be allowed to make Acpi calls itself. - */ - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - Status = AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, - ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, - ACPI_NS_WALK_UNLOCK, - AcpiNsGetDeviceCallback, &Info, - ReturnValue); - - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiAttachData - * - * PARAMETERS: - * - * RETURN: Status - * - * DESCRIPTION: - * - ******************************************************************************/ - -ACPI_STATUS -AcpiAttachData ( - ACPI_HANDLE ObjHandle, - ACPI_OBJECT_HANDLER Handler, - void *Data) -{ - ACPI_NAMESPACE_NODE *Node; - ACPI_STATUS Status; - - - /* Parameter validation */ - - if (!ObjHandle || - !Handler || - !Data) + else { - return (AE_BAD_PARAMETER); - } + /* Non-null handle, ignore the parent */ + /* Convert and validate the handle */ - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); + ChildNode = AcpiNsMapHandleToNode (Child); + if (!ChildNode) + { + Status = AE_BAD_PARAMETER; + goto UnlockAndExit; + } } - /* Convert and validate the handle */ + /* Internal function does the real work */ - Node = AcpiNsMapHandleToNode (ObjHandle); + Node = AcpiNsGetNextNode (Type, ParentNode, ChildNode); if (!Node) { - Status = AE_BAD_PARAMETER; + Status = AE_NOT_FOUND; goto UnlockAndExit; } - Status = AcpiNsAttachData (Node, Handler, Data); - -UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDetachData - * - * PARAMETERS: - * - * RETURN: Status - * - * DESCRIPTION: - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDetachData ( - ACPI_HANDLE ObjHandle, - ACPI_OBJECT_HANDLER Handler) -{ - ACPI_NAMESPACE_NODE *Node; - ACPI_STATUS Status; - - - /* Parameter validation */ - - if (!ObjHandle || - !Handler) - { - return (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - /* Convert and validate the handle */ - - Node = AcpiNsMapHandleToNode (ObjHandle); - if (!Node) + if (RetHandle) { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; + *RetHandle = AcpiNsConvertEntryToHandle (Node); } - Status = AcpiNsDetachData (Node, Handler); UnlockAndExit: - (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); - return (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiGetData - * - * PARAMETERS: - * - * RETURN: Status - * - * DESCRIPTION: - * - ******************************************************************************/ -ACPI_STATUS -AcpiGetData ( - ACPI_HANDLE ObjHandle, - ACPI_OBJECT_HANDLER Handler, - void **Data) -{ - ACPI_NAMESPACE_NODE *Node; - ACPI_STATUS Status; - - - /* Parameter validation */ - - if (!ObjHandle || - !Handler || - !Data) - { - return (AE_BAD_PARAMETER); - } - - Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE (Status)) - { - return (Status); - } - - /* Convert and validate the handle */ - - Node = AcpiNsMapHandleToNode (ObjHandle); - if (!Node) - { - Status = AE_BAD_PARAMETER; - goto UnlockAndExit; - } - - Status = AcpiNsGetAttachedData (Node, Handler, Data); - -UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return (Status); } |
